package org.apache.maven.profiles.activation;

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *  http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

import org.apache.maven.model.Activation;
import org.apache.maven.model.ActivationOS;
import org.apache.maven.model.Profile;
import org.codehaus.plexus.util.Os;

@Deprecated
public class OperatingSystemProfileActivator implements ProfileActivator {

  public boolean canDetermineActivation(Profile profile) {
    Activation activation = profile.getActivation();
    return activation != null && activation.getOs() != null;
  }

  public boolean isActive(Profile profile) {
    Activation activation = profile.getActivation();
    ActivationOS os = activation.getOs();

    boolean result = ensureAtLeastOneNonNull(os);

    if (result && os.getFamily() != null) {
      result = determineFamilyMatch(os.getFamily());
    }
    if (result && os.getName() != null) {
      result = determineNameMatch(os.getName());
    }
    if (result && os.getArch() != null) {
      result = determineArchMatch(os.getArch());
    }
    if (result && os.getVersion() != null) {
      result = determineVersionMatch(os.getVersion());
    }
    return result;
  }

  private boolean ensureAtLeastOneNonNull(ActivationOS os) {
    return os.getArch() != null || os.getFamily() != null || os.getName() != null || os.getVersion() != null;
  }

  private boolean determineVersionMatch(String version) {
    String test = version;
    boolean reverse = false;

    if (test.startsWith("!")) {
      reverse = true;
      test = test.substring(1);
    }

    boolean result = Os.isVersion(test);

    if (reverse) {
      return !result;
    } else {
      return result;
    }
  }

  private boolean determineArchMatch(String arch) {
    String test = arch;
    boolean reverse = false;

    if (test.startsWith("!")) {
      reverse = true;
      test = test.substring(1);
    }

    boolean result = Os.isArch(test);

    if (reverse) {
      return !result;
    } else {
      return result;
    }
  }

  private boolean determineNameMatch(String name) {
    String test = name;
    boolean reverse = false;

    if (test.startsWith("!")) {
      reverse = true;
      test = test.substring(1);
    }

    boolean result = Os.isName(test);

    if (reverse) {
      return !result;
    } else {
      return result;
    }
  }

  private boolean determineFamilyMatch(String family) {
    String test = family;
    boolean reverse = false;

    if (test.startsWith("!")) {
      reverse = true;
      test = test.substring(1);
    }

    boolean result = Os.isFamily(test);

    if (reverse) {
      return !result;
    } else {
      return result;
    }
  }

}
